JP2013020487A - Data collection method and data collection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data collection method and a data collection system which are capable of collecting and managing the information on a battery mounted on a vehicle by each vehicle.SOLUTION: The data collection system includes: a battery information collection server 6 that periodically receives the information on a battery mounted on the vehicle, which is transmitted wirelessly, and identification information by which an individual vehicle is identifiable from a computer on the vehicle which acquires and stores the information on the battery; and a battery information analyzing section 8 that displays a result in which the information on the battery of the battery information collection server 6 is classified by identification information for each vehicle. Preferably, the vehicle mounts thereon a battery pack including a battery and a battery-monitoring control device that monitors the battery. The battery information analyzing section 8 refers to the identification information, battery information corresponding to the identification information, replacement history corresponding to the battery-monitoring control device, and replacement history of the battery built in the battery pack to extract the battery information corresponding to the battery-monitoring control device, and processes the extracted information to be displayed.

Description

  The present invention relates to a data collection method and a data collection system, and more particularly to a data collection method and a data collection system for collecting information indicating the state of vehicle parts from a market.

  Japanese Patent Laying-Open No. 2007-213324 (Patent Document 1) discloses a technique for transmitting data related to a vehicle from the vehicle. In this technique, vehicle operation information indicating the operation status of the vehicle is collected by the vehicle and stored in a data logger. The accumulated vehicle operation information is periodically transferred from the in-vehicle terminal to the driving evaluation server via the communication network.

JP 2007-213324 A JP 2003-256980 A JP 2002-150343 A

  In recent years, electric vehicles and hybrid vehicles equipped with a driving motor and a battery have attracted attention as vehicles. For such vehicles, it is desirable to collect a lot of data on how batteries are used in the market in order to improve the reliability of vehicles developed in the future.

  In a vehicle, information about a battery is measured or estimated and used for vehicle control. Therefore, it is conceivable to store information about the battery in a memory or the like in the vehicle. However, in order to collect the accumulated information, the information is collected by physically connecting the information collecting device to a memory or the like in the vehicle, or a device (for example, a battery monitoring ECU) including the memory or the like in which the information is accumulated is used in the vehicle. Had to get from.

  The above-mentioned JP 2007-213324 A periodically transmits data from a vehicle to a server via a communication network. However, the technology described in this document is intended to enable appropriate evaluation of vehicles in the used car market by collecting vehicle operation information via a network. There is no description or suggestion about collecting and managing battery information for each vehicle.

  An object of the present invention is to provide a data collection method and a data collection system capable of collecting and managing information on a battery mounted on a vehicle for each vehicle.

  In summary, the present invention provides a data collection method for collecting information indicating a state of a battery mounted on a vehicle from a market, and causes a computer on the vehicle side to acquire and store information on the battery mounted on the vehicle. And a step of periodically transmitting wirelessly the battery information stored in the computer from the vehicle to the battery information collection server.

  Preferably, in the transmitting step, battery information is transmitted to the battery information collecting server together with identification information capable of identifying the vehicle individual. The data collection method further includes a step of causing the battery information collection server to classify and store battery information for each vehicle based on the identification information.

  More preferably, the identification information is stored in a battery monitoring control device built in the battery pack. In the transmitting step, the identification information and the battery information storing the change in the state of the battery for a predetermined period are read from the battery monitoring control device and transmitted to the battery information collecting server.

  More preferably, the data collection method refers to the battery information by referring to the identification information and the battery information corresponding to the identification information, the replacement history of the battery monitoring controller, and the replacement history of the battery built in the battery pack. The method further includes the step of extracting battery information corresponding to the control device, and processing and displaying the extracted information.

  In another aspect, the present invention is a data collection system that collects information indicating a state of a battery mounted on a vehicle from the market, from a vehicle-side computer that acquires and stores information on the battery mounted on the vehicle. A battery information collection server that periodically receives battery information transmitted wirelessly and identification information that can identify a vehicle individual, and a result obtained by classifying battery information of the battery information collection server for each vehicle by identification information. A battery information analysis unit to be displayed.

  Preferably, the vehicle includes a battery pack including a battery and a battery monitoring control device that monitors the battery. The battery information analysis unit refers to the identification information and the battery information corresponding to the identification information, the replacement history of the battery monitoring control device, and the replacement history of the battery built in the battery pack. The battery information corresponding to is extracted, and the extracted information is processed and displayed.

  According to the present invention, it becomes possible to collect and manage battery information mounted on a vehicle for each vehicle. Therefore, it becomes easy to obtain and analyze battery information used under various conditions. It is also possible to centrally manage the deterioration state of each battery.

It is a figure for demonstrating the data collection system of this Embodiment. It is the block diagram which showed the structure of the vehicle. It is the figure which showed the operational image of the data collection method of this Embodiment. It is a figure for demonstrating an example of provision of the monitoring unit ID. It is a flowchart for demonstrating control of the data acquisition and transmission performed in a vehicle. It is a flowchart for demonstrating the control performed by a battery information collection server. It is a flowchart for demonstrating the process performed by a battery information analysis part. It is a figure for demonstrating collation of the battery data when a battery monitoring unit is replaced | exchanged.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

FIG. 1 is a diagram for explaining a data collection system according to the present embodiment.
Referring to FIG. 1, data collection system 5 includes a battery information collection server 6 and a battery information analysis unit 8. Battery information (including information a, b, c, and d) is wirelessly transmitted from the vehicles 1 to 3 to the battery information collection server 6. The battery information collection server 6 has a battery pack ID of a shipped battery pack and a battery stack included in the battery pack (hereinafter also simply referred to as “battery”) so that the components inside the battery pack can be collated from the unit factory 12. ) And the ID of the monitoring unit (battery stack ID, monitoring unit ID).

  From the unit factory 12, the battery pack unit assembled in the vehicle factory is shipped. In the vehicle factory 10, the battery pack unit is incorporated in the vehicle. From the vehicle factory, information on the combination of the vehicle ID of the shipped vehicle and the battery pack ID of the battery pack incorporated in the vehicle is transmitted to the battery information collection server 6.

  Further, when the battery pack is incorporated in a vehicle and used in the market, it may be replaced due to a failure or the like. There may also be a case where parts (battery stack, monitoring unit, etc.) inside the battery pack are replaced. Such part replacement information is transmitted to the battery information collection server 6 from the parts replacement acquisition information database 14 at a repair shop or the like when the replacement occurs.

  The battery information analysis unit 8 analyzes information on the battery collected by the battery information collection server 6 based on conditions specified by the operator, and displays or prints out the information in a form that is easy for the operator to see.

  FIG. 2 is a block diagram showing the configuration of the vehicle. The vehicle 100 shows an example of the configuration of the vehicles 1 to 3 in FIG. Although an example of an electric vehicle is shown as the vehicle 100, the vehicles 1 to 3 in FIG. 1 may be a hybrid vehicle further equipped with an engine, a fuel cell vehicle further equipped with a fuel cell, etc. If it is, it is not limited to an electric vehicle.

  Referring to FIG. 2, vehicle 100 includes a battery pack 102, an inverter 110, a motor 116, a wheel 118, a power management electronic control unit (hereinafter referred to as PM-ECU) 112, and a wireless communication module 120. .

  The battery pack 102 includes a battery 104 (also referred to as a battery stack) and a battery monitoring unit 106. Battery 104 is a secondary battery such as a nickel metal hydride battery or a lithium ion battery. The battery monitoring unit 106 is equipped with a memory 108. The battery monitoring unit 106 periodically measures or estimates various data (current, voltage, temperature, resistance, SOC, etc.) of the battery 104 and stores the data in the memory 108.

  PM-ECU 112 and battery monitoring unit 106 are computers mounted on the vehicle.

  Inverter 110 receives electric power from battery 104 of battery pack 102 and drives motor 116. The motor 116 drives the wheels 118 via a differential gear (not shown).

  PM-ECU 112 receives various data (current, voltage, temperature, resistance, SOC, etc.) of battery 104 from battery monitoring unit 106 and controls inverter 110 based on the data. The PM-ECU 112 is equipped with a memory 114, and the memory 114 stores a vehicle ID stamped on the vehicle body frame.

  The PM-ECU 112 reads various data of the battery 104 and the battery monitoring unit ID that are measured from the battery monitoring unit 106 and stored in the memory 108 periodically (for example, once every month or every three months), and wireless communication is performed. The data is transmitted from the module 120 to the battery information collection server 6 of FIG. The battery information collection server 6 uses the battery monitoring unit ID as a key for distinguishing the transmitted various data of the battery 104 from those of other batteries. Other than the battery monitoring unit ID, any other unique ID can be used as long as it can identify the individual.

  In the above example, various data (current, voltage, temperature, resistance, SOC, etc.) of the battery 104 are periodically measured or estimated and stored in the memory 108, but stored in the memory 114 instead of the memory 108. You may let them.

FIG. 3 is a diagram showing an operation image of the data collection method of the present embodiment.
Referring to FIG. 3, data of vehicles 1 to 3 is stored in battery information collection server 6 using monitoring unit ID as a key.

  The vehicle 1 is equipped with a monitoring unit with a monitoring unit ID “201”. From the vehicle 1, various battery data are wirelessly transmitted to the battery information collection server together with the monitoring unit ID “201” every month. The battery information collection server 6 stores data files D1, D2, and D3 so that the data of the monitoring unit ID “201” can be extracted later. Data files D1, D2 and D3 contain various data for one month (current, voltage, temperature, resistance, SOC, etc.) measured or estimated in vehicles in September, October and November 2010, respectively. Data to be used for analysis).

  The battery information analysis unit 8 extracts data of the data files D1, D2, and D3 from the battery information collection server using the monitoring unit ID “201” as a key, arranges the data in order of time as shown in the graph G1, For example, a change in the resistance value of the battery is displayed on the screen of the display unit.

FIG. 4 is a diagram for explaining an example of assigning the monitoring unit ID.
Referring to FIG. 4, the monitoring unit IDs are assigned different numbers as long as the battery monitoring unit types are the same, and there is no same unit. For example, a unique number sequence (for example, 32 bits) is realized by using the manufacturing date, the manufacturing line number, and the serial number in the manufacturing line in order from the upper bit.

  Referring to FIG. 3 again, when the battery 104 in the battery pack 102 in FIG. 1 is replaced as in the vehicle 2 and the battery monitoring unit 106 is used as it is, the data is as shown in the graph G2. Discontinuities occur. In this case, when the battery information analysis unit 8 obtains information indicating that the battery has been replaced from the battery information collection server 6, the data before the time t1 is treated as the data of another battery, and only the data after the time t1. It is also possible to analyze the degree of deterioration of the battery targeting

  Further, as in the case of the vehicle 3, the battery monitoring unit 106 in the battery pack 102 in FIG. 1 may be replaced and the battery 104 may be used as it is. In this case, the monitoring unit ID sent from the vehicle 3 is changed from “203” to “204” on the way. For example, the battery information collection server 6 accumulates battery data for September and October 2010 so that they can be extracted with the monitoring unit ID “203”, and stores battery data for November 2010 with the monitoring unit ID “ 204 ”is stored so that it can be extracted. The battery information analysis unit 8 can separately display the information that the monitoring unit ID has been changed from “203” to “204”, so that the graph G3 can be combined with the first half of the graph G4 and displayed.

  FIG. 5 is a flowchart for explaining control of data acquisition and transmission executed in the vehicle.

  With reference to FIGS. 2 and 5, when the process is started, in step S <b> 1, battery monitoring unit 106 determines whether or not a data collection time point (for example, once a day) has arrived. If the data collection time has not arrived in step S1, the process waits again in step S1. In data collection, the maximum value or minimum value of data from the start to the end of a predetermined period (for example, one day) may be acquired.

  If the data collection time has come in step S1, the process proceeds to step S2, where battery data is collected and stored in the memory 108. Then, the process proceeds to step S3.

  In step S3, PM-ECU 112 determines whether or not a data transmission time point (for example, once a month) has arrived. If it is determined in step S3 that the data transmission time has not yet arrived, the process returns to step S1.

  If it is determined in step S3 that the data transmission time has arrived, the process proceeds to step S4, where the PM-ECU 112 stores the battery data and battery monitoring unit ID stored in the memory 108 inside the battery monitoring unit 106. Is transmitted wirelessly to the battery information collection server 6 using the wireless communication module 120.

  When the data transmission is completed in step S4, the process returns to step S1, and accumulation of the battery data in the memory inside the vehicle is started again. If the memory capacity is insufficient, the battery data may be accumulated after the memory is cleared after being transmitted to the battery information collection server 6.

  FIG. 6 is a flowchart for illustrating the control performed by the battery information collection server.

  Referring to FIGS. 1 and 6, first in step S <b> 11, battery information collection server 6 determines whether or not there is data transmission from vehicles 1 to 3. If there is no data transmission in step S11, the data transmission detection wait is performed again in step S11.

  If there is data transmission in step S11, the process proceeds to step S12. In step S12, the battery information collection server 6 classifies and stores the battery data for each vehicle based on the battery monitoring unit ID as shown in FIG. In addition, even if it says a classification, what is necessary is just to be able to extract by battery monitoring unit ID later, and the relationship between battery data and battery monitoring unit ID should just be known.

  When the storage of the battery data ends in step S12, the process returns to step S11 again, and the next data transmission waiting state from the vehicles 1 to 3 is entered.

FIG. 7 is a flowchart for explaining processing executed by the battery information analysis unit.
Referring to FIGS. 1 and 7, when the process is started, battery information analysis unit 8 determines in step S21 whether or not a battery monitoring unit ID is designated by the user. The battery monitoring unit ID is information used as a key for extracting battery data for each vehicle. Until the battery monitoring unit ID is designated in step S21, the process waits for the designation. If the battery monitoring unit ID is specified in step S21, the process proceeds to step S22.

  In step S22, the battery information analysis unit 8 determines whether there is a replacement history of the designated battery monitoring unit ID. The presence / absence of this replacement history can be determined by referring to the replacement history information transmitted from the component replacement acquisition information DB 14 to the battery information collection server 6 and stored in the battery information collection server.

  If there is a battery monitoring unit replacement history in step S22, the process proceeds to step S23. In step S23, the battery monitoring unit ID before or after replacement is extracted.

  If there is no battery monitoring unit replacement history in step S22, or if a battery monitoring unit ID before or after replacement is extracted in step S23, the process proceeds to step S24, and battery data is collected from the battery information collection server. Is acquired.

  FIG. 8 is a diagram for explaining collation of battery data when the battery monitoring unit is replaced.

  Referring to FIGS. 1 and 8, vehicle factory 10 transmits to battery information collection server 6 a battery ID indicating a vehicle ID and a battery pack ID incorporated in the vehicle specified by the vehicle ID.

  Further, the unit factory transmits the battery pack ID, the ID of the battery stack incorporated in the battery pack specified by the battery pack ID, and the ID of the monitoring unit to the battery information collection server 6 from the unit factory. Come.

  Further, from the parts replacement acquisition information database 14, data indicating correspondence of IDs before and after replacement of parts replaced at the time of repair or the like is transmitted to the battery information collection server 6.

  The case of obtaining battery data related to the vehicle 3 in FIG. 3 will be described with reference to FIG. When the operator of the battery information analysis unit 8 inputs the monitoring unit ID = “204”, the battery information analysis unit 8 refers to the data stored in the battery information collection server 6 in step S22 of FIG. Information about the monitoring unit ID “204” is obtained. When the monitoring unit ID “204” is assembled at the vehicle factory, it is found that the corresponding vehicle ID or battery pack ID does not exist, and the information from the parts replacement acquisition information DB is found on October 31, 2010. It can be seen that the repaired unit is replaced with the monitoring unit ID “203”.

  Therefore, the data of the graph G3 in FIG. 3 is transferred to the graph G4, and the synthesized graph is displayed on the display unit later in steps S27 and S28. Thereby, the operator can know how the battery mounted on the vehicle has been used.

  Note that it is conceivable that the faulty monitoring unit ID before replacement is specified in step S1 of FIG. 7. In this case, the data of the graph G4 is synthesized with the graph G3 of FIG. 3 in steps S27 and S28. Things are displayed.

  Referring to FIG. 7 again, when acquisition of necessary battery data from the battery information collection server is completed in step S24, it is next determined in step S25 whether or not there is a replacement history of battery 104 in battery pack 102. Is done. When the battery 104 is replaced by repair or the like, a discontinuous portion is generated in the data as shown in the graph G2 of FIG. It is not appropriate to handle such data as data for one battery. Therefore, in step S26, the battery information analysis unit 8 deletes the battery data part before replacement in step S26.

  Regarding the determination of the replacement history of the battery 104, in addition to the current and resistance monitored by the battery monitoring unit, the battery age (elapsed time since the battery was installed) is stored, and this is stored in one of the data. It is sufficient to transmit as one. The battery age is reset to zero when the battery 104 is replaced. For this reason, the battery information analysis unit 8 determines that the battery has been replaced when the battery age becomes discontinuous (when reset to zero, when returning to the decreasing direction, when increasing more than expected, etc.). To do.

  If it is determined in step S25 that there is a replacement history of the battery 104 in the battery pack 102, only the battery currently installed in the vehicle is the target of data collection, so the process proceeds to step S26, and battery information After the analysis unit 8 deletes the battery data part before replacement, the process proceeds to step S27. On the other hand, if it is determined in step S25 that there is a replacement history of the battery 104 in the battery pack 102, the process proceeds directly to step S27 without executing the process of step S26.

  In step S27, display data is created from the battery data obtained in step S24 and unnecessary portions deleted in step S26. In step S28, information is displayed on a display unit such as a liquid crystal display so as to be understood by the operator. This displayed information includes a histogram such as internal resistance of the battery, full charge capacity, charge / discharge current, battery temperature, and a line graph. When the display process in step S28 ends, the process executed by the battery information analysis unit 8 in step S29 ends.

  As described above, in the present embodiment, a uniquely managed ID for the battery pack is stored in the battery monitoring unit mounted in the battery pack in order to monitor the state of the battery. Necessary data (for example, a histogram of battery internal resistance, full charge capacity, charge / discharge current, battery temperature, etc.) is collected through the network together with its ID.

With the above feature points, it is possible to centrally manage the deterioration state of the battery for each vehicle.
Further, more accurate data management can be performed by acquiring a history of component replacement and collating it with the collected data.

  Finally, this embodiment will be summarized with reference to FIGS. 1 and 2 again. The present embodiment relates to a data collection system that collects information indicating a state of a battery mounted on a vehicle from a market. The data collection system discriminates battery information and vehicle individual transmitted wirelessly from a vehicle-side computer (either battery monitoring unit 106 or PM-ECU 112) that acquires and stores information on the battery mounted on the vehicle. Battery information collection server 6 that periodically receives possible identification information (battery monitoring unit ID), and a battery information analysis unit that displays the result of classifying the battery information of battery information collection server 6 for each vehicle by identification information 8.

  Preferably, vehicle 100 includes a battery pack 102 including a battery 104 and a battery monitoring unit 106 that monitors battery 104. As shown in FIGS. 3, 7, and 8, the battery information analysis unit 8 includes the identification information (battery monitoring unit ID), information on the battery 104 corresponding to the identification information (battery monitoring unit ID), and the battery monitoring unit 106. The information of the battery 104 corresponding to the battery monitoring unit 106 is extracted with reference to the replacement history of the battery 104 and the replacement history of the battery 104, and the extracted information is processed and displayed on a display or the like.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1-3, 100 Vehicle, 5 Data collection system, 6 Battery information collection server, 8 Battery information analysis unit, 10 Vehicle factory, 12 Unit factory, 14 Parts replacement acquisition information database, 102 Battery pack, 104 Battery, 106 Battery monitoring Unit, 108, 114 Memory, 110 Inverter, 116 Motor, 118 Wheel, 120 Wireless communication module, D1-D3 data file.

If it is determined in step S25 that there is a replacement history of the battery 104 in the battery pack 102, only the battery currently installed in the vehicle is the target of data collection, so the process proceeds to step S26, and battery information After the analysis unit 8 deletes the battery data part before replacement, the process proceeds to step S27. On the other hand, if it is determined in step S25 that there is no replacement history of the battery 104 in the battery pack 102, the process proceeds to step S27 as it is without executing the process of step S26.

Claims (6)

A data collection method for collecting information indicating a state of a battery mounted on a vehicle from a market,
Acquiring and storing information of the battery mounted on the vehicle in a vehicle-side computer;
Transmitting the battery information stored in the computer from the vehicle to the battery information collecting server periodically and wirelessly. In the transmitting step, the battery information is transmitted to the battery information collecting server together with identification information that can identify the vehicle individual,
The data collection method according to claim 1, further comprising the step of causing the battery information collection server to classify and store the battery information for each vehicle based on the identification information. The identification information is stored in a battery monitoring control device built in the battery pack,
3. The data according to claim 2, wherein the transmitting step reads out the identification information and battery information storing changes in the state of the battery during a predetermined period from the battery monitoring control device and transmits the battery information to the battery information collection server. Collection method.   With reference to the identification information and the battery information corresponding to the identification information, the replacement history of the battery monitoring control device, and the replacement history of the battery built in the battery pack, the battery monitoring control device The data collection method according to claim 3, further comprising the step of extracting information on the battery corresponding to, and processing and displaying the extracted information. A data collection system for collecting information indicating a state of a battery mounted on a vehicle from a market,
A battery information collection server that periodically receives information on the battery and identification information that can identify a vehicle individual transmitted wirelessly from a vehicle-side computer that acquires and stores information on the battery mounted on the vehicle; ,
A data collection system comprising: a battery information analysis unit that displays a result of classifying the battery information of the battery information collection server for each vehicle by the identification information. The vehicle is equipped with a battery pack that includes the battery and a battery monitoring control device that monitors the battery,
The battery information analysis unit refers to the identification information and the battery information corresponding to the identification information, the replacement history of the battery monitoring control device, and the replacement history of the battery built in the battery pack. The data collection system according to claim 5, wherein information on the battery corresponding to the battery monitoring control device is extracted, and the extracted information is processed and displayed.

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